Device for opening lamp doors



P. LAVOLD I DEVICE FOR OPENING LAMP ISOORS Nov. 9 1926.

Filed Oct. 5. 1924 INVENTOR ATTORNEYS PETER LAVOLD, OF VIROQUA,WISCONSIN.

DEVICE FOR OYPENING LAMP DOORS.

Application filed October 3, 1924.

My invention relates to improvements in devices for opening lamp doors,and it consists in the combinations, constructions, and arrangementsherein described and claimed.

An object of my invention is to provide a device for opening lamp doorswhich is extremely simple in construction and which may be quicklyapplied to the lamp door and then turned so as to loosen the door uponthe lamp casing.

A further object of my invention is to provide a device for opening lampdoors which acts as a wrench and which is pro vided with novel means forengaging wit. the knobs that are provided on the standard doors, wherebya turn of the wrench will rotate the lamp door with respect to theeasing and loosen the door upon the casing.

Other objects and advantages will appear in the following specification,and the novel features of the invention will be particularly pointed outin the appended claim.

My invention is illustrated in the accompanying drawing forming a partof this application in which Figure 1 is a front elevation of the deviceas shown operatively applied to a. lamp door, and

Figure 2 is a section along the line 22 of Figure 1.

In carrying out my invention I provide a frame 1 which is composed ofside members 2 and end members 3. The frame may be made of metal or anyother material, as desired. The form of the frame 1 is rectangular.Various other forms maybe employed other than the rectangular formwithout departing from the spirit and scope of my invention.

The frame carries cross pieces 4 of the shape shown in Figure 2. Theends of the pieces 4 are secured to the sides 2 by means ofra half-lapjoint. The pieces are curved so as to extend over the rim 5 of the lampdoor when the frame 1 is placed against the front of the door as shownin Figure 2. hen the frame is placed against the front of the door, assho "n in Figure 2, the pieces 4; will have their adjacent surfaces 6abut the periphery of the rim 5. The surfaces 6 have grooves 7 thereinwhich are adapted to receive the knobs 8 of the rim. The frame may nowbe given a turn toward the Serial No. 741,448.

dotted line position shown in Figure 1 so as to rotate the rim 5 withrespect to the casing, thus freeing the rim from the casing.

From the foregoing description of the various parts of the device theoperation thereof may be readily understood. It is a well known factthat when the rims of lamps become slightly rusty it is almostimpossible to remove the rims from the lamps by hand. This is especiallytrue when the lamp casings have been painted, since the paint flows intothe crevices between the rim and the casing and acts as a cement. By theuse of the device set forth in the present specification, a greaterleverage can be applied to the rim whereby the rim may be removed fromthe casing. Certain of the standard lamps are provided with knobs 8 onthe periphery of the rim, and I make use of these knobs in removing therim from the casing.

hen removing the rim from the casing, the device is placed upon thefront of the lamp door in the manner shown in Figure 2 so as to causethe pieces 4 to slide over the periphery of the rim. The grooves arealigned with the knob 8 before the device is applied to the rim. The rimis secured to the casing by means of a bayonet joint connection (notshown) and a slightturn of the frame 1 is sufiicient to-free the rimfrom the casing. The portion of the frame 1 which extends beyond'thepieces 4 act as handles and may be grasped by the operator when swingingthe device into the dotted line position. The device is small enough tobe carried in the ordinary tool kit of the automobile when not in use.

I claim:

A device of the type described compris 111g a frame adapted to bearagainst the outer surface of a headlight 'door, said frame extendingbeyond the periphery of the door, the extending portions constitutinghandles, door-engaging incn'ibers carried by said frame and havingrecesses adapted to receive the knobs carried by the door, said membersextending tangently with respect to the periphery of the door and beingshaped so as to engage with the knobs on the door when said frame abutsagainst the door.

PETER LAVOLD.

